TOPIC: HELP! MODIFING *.CSV AND IMPORTING DOESN'T WORK

Hi
I prepared a structure of a survey.
I try to modify file CSV in the name and the author but when I upload the file in a new survey something comes wrong!
The "Survey import summary" appear without numbers of question and any data appears...
Previously the file work fine. I modified it with excel and openoffice.
Please help me!